ALIEN ALGAE — Volunteers are needed from 8 a.m.-noon Saturday to remove invasive algae from Waikiki. Bring snorkeling gear if you plan to go into the water. Meet at Hilton Hawaiian Village. Snack and lunch provided. Contact Signe Opheim at 779-2616 or opheim@hawaii.edu.

WINDWARD WORKDAY — The Windward Ahupua'a Alliance will hold a landscaping work day and HI 5¢ beverage container collection drive 8:30-11:30 a.m. Saturday at the Kawai Nui Wayside Park, opposite the model-airplane field on Kapa'a Quarry Road. Wear closed-toe shoes with gripping soles, long-sleeved shirt, bug repellent, sunscreen and a hat; lunch, water, snacks and tools provided. Advance registration requested: 247-6366 or 223-5535, or info@waa-hawaii.org.

KIPAHULU OVERNIGHTER — Join the Friends of Haleakala for an overnight service trip Saturday and Sunday in the Kipahulu District. Bring gloves, long pants and long-sleeved work shirt, water bottle, sun/rain protection, swimwear, bug repellent, food, flashlight, sleeping bag. Information/reservations: (808) 248-7660.

ALA WAI CLEANUP — The Sierra Club will clear debris from the Ala Wai Small Boat Harbor on March 18. Meet at 8 a.m. at the harbor master's office. Bring sturdy shoes, hat, thick rubber gloves, sunscreen, water. Call Sylvianne Yee at 373-3062 or Deborah Blair at 955-4168.

POUHALA MARSH — The Hawai'i Nature Center is cleaning and restoring the wetland habitat in Pearl Harbor. Volunteers are needed to pull pickleweed and mangrove 8:30-11:30 a.m. March 18. Bring work gloves, water, hat, sunscreen, towel and change of clothes; covered footwear and long pants required. Contact Pauline Kawamata at 955-0100, ext. 18, or paulinekawamata @aditl.com.

WHALE COUNT — The Hawaiian Islands Humpback Whale National Marine Sanctuary needs volunteers March 25 to count whales over a four-hour period at 65 sites on three islands. To register, call (888) 559-4253, ext. 253, on the Big Island; (808) 246-2860 on Kaua'i; or 397-2654, ext. 253, on O'ahu.

WEED WARRIORS — Student volunteers age 14 and older can help Maui Invasive Species Committee survey and control invasive weed populations, and learn scientific protocol and aid conservation efforts. Search for ivy gourd on March 25 and catch coqui frogs March 28. Reservations and parental approval required. Contact Shannon Wianecki at (808) 573-6472 or hoikeinfo@yahoo.com.

HANAUMA HELPERS — The Hanauma Bay Education Program is seeking volunteers to answer visitor questions, lead interpretive talks and promote reef etiquette. Contact Melissa Mac Garrett at 394-1374 or write hbvp @hawaii.edu.

NATURE DOCENTS — Volunteer teaching docents are needed for the Hawai'i Nature Center's second-grade program. Time commitment is four hours in the morning twice a week from March to May. Call Pauline Kawamata at 955-0100, ext. 18.

KANAHA RESTORATION — Volunteers are needed daily for brush removal, rubbish pickup, planting and watering at Maui's Kanaha Beach Park. Contact Community Work Day at (808) 877-2524, cwdkhb@pixi .com or www.hear.org/naturalareas /kanahabeach.

GREEN NOTES

WORM COMPOSTING — Learn the basics of vermicomposting at 9:30 a.m. March 18 at Honolulu Waldorf School, Niu Valley; $30 fees includes minibin, starter colony and manual. 382-0432 or waikikiworm@hawaii .rr.com.

KONA MULCH GIVEAWAY: Free mulch is available at the Kealakehe/ Kona Transfer Station's green waste area, 6:30 a.m.-6:30 p.m. daily; bring pitchfork. Loading assistance is provided from 7 a.m. to 4 p.m.

Send listings to: For the Environment, P.O. Box 156, Wailuku, HI 96793; cwilson@honoluluadver tiser.com; or fax (808) 242-1520.